- Which density determination is the most accurate?
- What is the relationship between mass volume and density?
- Why is mass more accurate than volume?
- How did you measure the mass and volume of the stone?
- What are the two main types of exact numbers?
- How can you use density to identify a material?
- How do you determine what is more dense?
- What are 2 ways to measure volume?
- Is density an exact number?
- What is accepted density?
- Is percentage an exact number?
- Is temperature an exact number?
- Is density proportional to the amount of a substance?
- Which method of determining volume is more accurate?
- Is density a reliable method for determining?
Which density determination is the most accurate?
The Tools Used to Measure DensityScale.
Mass is one of the most easily obtained measurements.
The most accurate way to determine an object’s volume, especially in the case of an irregularly shaped object, is to immerse it in water and measure the amount of water it displaces.
The Value of Density..
What is the relationship between mass volume and density?
Mass is how heavy something is, volume tells you how big it is, and density is mass divided by volume.
Why is mass more accurate than volume?
Units of mass are inherently more accurate than units of volume because they mostly ignore confounding factors, like how tightly an ingredient is packed into a cup or what shape you’ve chopped it into.
How did you measure the mass and volume of the stone?
One way to measure the volume of any irregular object (in your case, a stone) is to submerge it completely under water and measure the change in the height of the water level. This change in the water level (let’s say it goes from 50 mL to 65 mL) indicates that the stone has a volume of 15 mL.
What are the two main types of exact numbers?
In scientific work we recognize two kinds of numbers: exact numbers (those whose values are known exactly) and inexact numbers (those whose values have some uncertainty). Exact numbers are those that have defined values or are integers that result from counting numbers of objects.
How can you use density to identify a material?
How can you use density to identify a material? Answer: Density can be used to identify an object by discovering the mass of your object on the scale, then finding the capacity of an item with a uniform shape. 2. What are limitations of the calculated and indirect volume measurement?
How do you determine what is more dense?
Students should realize that if an object weighs more than an equal volume of water, it is more dense and will sink, and if it weighs less than an equal volume of water, it is less dense and will float.
What are 2 ways to measure volume?
There are other units for measuring volume; cubic inches, cubic feet, cubic yards are all units used for measuring volume. Milliliters, liters, gallons are also used especially when measuring liquids. We write cubic sizes using a small 3 next to the unit.
Is density an exact number?
In the last step, we limit our final answer to two significant figures because the volume quantity has only two significant figures; the 1 in the volume unit is considered an exact number, so it does not affect the number of significant figures. … Density can be used as a conversion factor between mass and volume.
What is accepted density?
Density is defined as mass/volume, and is usually expressed as g/mL (or g/cm3 in the metric system). … The accepted value of density is 8.470 g/cm3 for brass. Determine the accuracy of your average measured values by calculating the % error for each of your average density values.
Is percentage an exact number?
“Percent” means out of exactly one hundred. e.g. 25.9% means 25.9 out of exactly 100 or 25.9/100 (25.9 has 3 sig. fig., but 100 is exact.)
Is temperature an exact number?
The conversions between Celsius, Fahrenheit, and Kelvin temperatures are exact. This means the fractions (5/9 or 9/5) and the number 32 are exact. The number 273.15, in the Celsius to Kelvin temperature conversion, is also exact.
Is density proportional to the amount of a substance?
Note that density is directly proportional to the mass (or weight) and indirectly proportional to the volume: If volume stays the same as mass increases, the density will increase by the same factor. If volume stays the same as mass decreases, the density will decrease by the same factor.
Which method of determining volume is more accurate?
The volume of liquid can either be measured directly or can be weighed. Knowing the mass of liquid and the density we can get the volume. This method of determining volume is easy to carry out and is more accurate due to the high accuracy possible in weighing.
Is density a reliable method for determining?
The density, ρ, of an object is defined as the ratio of its mass to its volume. Density can be useful in identifying substances. It is also a convenient property because it provides a link (or conversion factor) between the mass and the volume of a substance.